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When you are checking the timing you are removing the vacuum line to the distributor and blocking the line from the engine, right? The three notches you see when checking the timing are actually showing advanced and not retarded? The accelerator pump rod being in either hole won't have any...

Am I seeing that video right? When you first start to open the primary the secondaries close further before they start to open. It must be a problem with the linkage on the carb.

Make sure you install the low pressure spring in the regulator for the carb setup. Since you may have put a lot of extra fuel into the engine I would check the oil to make sure it's not full of fuel. How are you installing the fuel return line?

Thanks for the ideas. On another forum I found someone that's modified their existing pickup for an in tank pump like this. I'll keep the charcoal canister connected to the fuel tank the way it is and weld a steel AN6 bung into the fuel tank filler tube for a braided return line...

I thought about drilling the cap but I worry on hard acceleration or on a corner fuel might drain down the side of the car. The Yogis looks interesting too but does it require a new hole cut in the top of the fuel tank?

Initially I was going to install and external pump to eliminate pulling the existing fuel pickup from the tank but now I'm thinking of installing an internal 255 lph Walbro onto the existing pickup setup. This car might see the drag strip once or twice a year since it's been converted to a 4...

I'm in the planning stages of installing fuel injection on the 440 engine in my Dart. The plan is to use the charcoal canister line at the fuel tank for the fuel return line. I believe the factory gas cap is sealed. If the factory gas cap is sealed and I'm using more fuel than is being...

I`m working on an EFI setup and thought about modifying one of these regulators. Your idea looks like it could work for an EFI setup too if I could find a spring with the appropriate pressure. The only thing I'm not sure of is if the original diaphragm can support the added pressure.

My previous car was 13.5:1 and I ran VP C12 for years.

PM sent

Summit has them. http://www.summitracing.com/int/search/department/air-fuel-delivery/part-type/fuel-pump-rebuild-kits/fuel-pump-manufacturer/holley?SortBy=BestKeywordMatch&SortOrder=Ascending

2012 NHRA rules It's 23 meg http://www.highschooldragracing.org/2012_NHRA_Rulebook.pdf

Main jets should have no affect on the idle mixture. Check the float levels and make sure the inlet needles are sealing and the carb isn't flooding.

If it initially hesitates and then picks up you need to enlarge the squirter, if it goes and then falls on it's face you need smaller squirters. Before messing with the squirters make sure there are no vacuum leaks and your initial timing is good. It cold be slack in the pump linkage too.